RT8108 Datasheet | Richtek

® 5V to 12V Single Synchronous Buck PWM Controller General Description The RT8108 series are single-phase synchronous buck PWM DC-DC controllers designed to drive two N-MOSFETs. They provide a highly accurate, programmable output voltage precisely regulated to low voltage requirement with an internal 0.6V or 0.8V reference. The RT8108 series use a single feedback loop voltage mode PWM control for fast transient response. The high driving capability makes it suitable for large output current applications. An oscillator with fixed frequency 200k Hz / 300k Hz / 500k Hz reduces the ponent size of the external inductor and capacitor for saving PCB board area and cost. The RT8108 series integrate plete protection functions such as OCP, OVP and OTP UVP into SOP-8 and SOP8 (Exposed Pad) surface mount packages. Ordering Information Package Type S : SOP-8 SP : SOP-8 (Exposed Pad-Option 1) Lead Plating System G : Green (Halogen Free and Pb Free) Frequency / VREF Options A : 300k / 0.6V B : 300k / 0.8V C : 200k / 0.6V D : 200k / 0.8V E : 500k / 0.6V F : 500k / 0.8V Note : Richtek products are :  Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020.  Suitable for use in Sn Pb or Pb-free soldering processes. Features - Single IC Supply Voltage ( 5V to 12V) - Drive Two N-MOSFETs - Fixed Operating Frequency at 200k Hz, 300k Hz and 500k Hz - Voltage Mode PWM Control with External Feedback Loop pensation - Over Current Protection by Sensing MOSFET RDS(ON) - Hardware Pin for On/Off Control - Full 0 to 90% Duty Cycle - Fast Transient Response - Ro HS pliant and Halogen Free Applications - Mother Boards and Desktop Servers - Graphic Cards - Switching Power Supply - Generic DC-DC Power...